Recoil-arrester.



W. J. KIN Q-Ir.

REGOIL ARRESTER.

APPLICATION FILED 9013, 191p.

Patented Nov. 12, 1912.

Ntnmrgn, 1

UNITED STATES PATENIOEFIQE.

WILLIAM J. KING, oronam) BLANc, Mronreaiv. iv

BECOIL-ARRESTER.

To all whom it may concern;

Be it known that I, WILLIAM J. KING, a

citizen of the United States, residing at Grand Blanc, county= of Genesee, State of which form a part of this specification.

My invention relates to recoil arresters as used on carriages between the axle and the carriage body, when such body is supported by springs, and it consists in the novel construction and combination hereinafter described and claimed.

In the drawings,Figure 1 is a vertical elevation of my apparatus or recoil arrester. Fig. 2, is a vertical section of the same at right angles to the view in Fig. l thescrew and spring hereinafterdescribed not being sectioned. Fig. 3 shows the arrangement at the end of the screw which prevents its being withdrawn from the nut, thereby operating as a check to oscillation as hereinafter described. r

In the drawings similar letters refer to similar parts.

Inasmuch as the recoil arrester, or shock absorber, as sometimes called, is familiar to those skilled in the art and its manner of adjustment on the frame and axle of the car is also well known, I have not shown or described anything more than the arrester itself withisufficient means of adjustment to enable anyone so skilled to apply it.

A represents a bar, forked at one end, each side of the fork a, a, shown in Fig. 1, being pivotally attached to a casing B. The

bar A turnsvertically on pivots a, a,

said fork is pivoted a thimble or hollow holding device D which may be adjusted upon any convenient attachment to the axle and which also when oscillated, is in a plane substantially parallel to and corresponding to the plane of the oscillations of the bar A.

It is obvious that such attachment of D to the axle would prevent the screw C from Specification of Letters Patent.

Application filed October 3, 1910. Serial No. 5'85,0I'7'.

,Pate nted Novl rotating, and thereby it becomes what may be termed a fixed screw.

E is a rotative nut in the casing B, having corresponding threads to and engaging screw C, which nut by the Vertical movement of the screw C is compelled to turn thereby. This nut has a collar 6 made integral with. it, which is of less thickness than the depth of the chamber in which it is located, and which is adapted to press upon a fiber washer F located in the cap G of the chamber, which cap is secured thereon in such manner as to compress the fiber washer F between the end of the casing B and the cap G. The nut has an extension 6 passing through an orifice in the cap G, upon which extension is formed a stuffing box by a per forated cap 6 The interior of this stuffing box is filled with fibrous material a which engages in the threads of the screw, and as the screw is forced in or out through the nut the stufiingrotating with the nut wipes out and cleans the screw-threads. This is an important feature, in my construction.

At the upper end of-the nut there is another projection e which forms a continuation thereof and supports a washer H. Upon this washer rests'a spiral spring S. Screwed into the interior of the'upper part of the casing is another case 9 engaging the spring which is thus adjustably compressed between the lower extension of this: case and the nut. This provides for an adjustable tension upon the spring whereby the action ofthe recoil arrester can be adjusted and controlled as hereinafter described. A jam nut J is threaded upon the case 9, which can be used to prevent its accidental turning and loss of adjustment after being once adjusted. The case g incloses the screw C, and at its upper end it is closedby the perforated screw-cap K. In the upper end a sponge or equivalent material, as shown at L, may be inserted and oiled through the oil hole 7s. hen the upper end of the screw C comes in contact with this oiled sponge the oil is squeezed out of it and, asis obvious, it runs down the screw-heads and lubricates them. It is obvious that when the recoil arrester is in theposition shown in Fig. l the foreing out of the non-rotatable screw C against, the rotatable nut E would tend to compress the spring S and thus relieve the frictional contact of the extension of the nut upon the fiber washer F, in which position the nut ficiently evident from the foregoing. de-

would turn relatively quite easily. On the return or rebound the screw C would be nonrotatably drawn out from the casing J, and

the' nut" E, compelling" the nut to rotate but causing it -to impinge' against the fiber 'washer G, thereby creating more or less friction depending on the pressure and tension thereon which is assisted. by the spring S, therefore the closing of the springs of the carriage would not be seriously resisted,

whereas the rebound of said springs would be checked in the manner described.-

Atthe upper end of the screw C, as:

shown in Fig. 3, there'is attached a strong washer W, of the same diameter as the full diameter of the screw-threads thereby clos-- ing the internal cut threads, and it is obvi-' ous thatif the screw was drawn out to its, full length the washer W would come in.'

contact with the nut E and arrest any further motion on the recoil 'or rebound, thereby operating in the same manner as though supporting straps had been attached to the carriage and inclosing theaxle, so that on the rebound the stfiips would come in contact with the axle and prevent the separation of the body and the axle.

The operation of this recoil arrester is sufscrlption.

Having thus described my.- invention-what I desire to claim is:

1. I1i;a recoil arrester, the combination of a non-rotatable screw, a casing within which said screw is inclosed, a rotatable nut in-.-

closed in said casing, a spring adapted to force said nut in one direction while per mitting it to turn, a friction washer upon the opposite side of said nut and a rotatable stufiing-box formed upon an extension of said nut engaging and clearing the threads of said screw, substantially as described.

2. A recoil arrester, having in combination, a screw, a friction washer'engaging thereabout, a .nut running on the screw and .revoluble by the lengthwise movement of paratively greater than the resistance on the movement of the screw in theOpPOSIt/e direction, substantially as described.

3. A recoil arrestcr, having in combinatlon, a screw, a friction washer engaging thereabout, a nut running on the screw and revoluble by the lengthwise movement of spring and contain lubricant, whereby in the movement of the screw in one direction *he nut' is forced away from the friction washer and a gradually increasing resistance is afforded by the spring, and upon the return movement of the screw, the recoil is checked by the frictional engagement ofthc nut and friction washer which is enhanced by the spring and which is comparatively greater than the resistance on the move--.

ment of the screw in the opposite direction,

substantially as described.

4:. In a recoil arrester, the combinationgof a screw adapted to move lengthwise, a nut running on said screw, a friction washer with which said-nut can frictionally engage, a casing about the screw provided with a closed-end member in which the end of the screw reciprocates and a spongy material contained in the end of said member and adapted to contain a lubricant which is taken up by the screw by contact with the spongy material, substantially as described.

5. In a recoil arrester, the combination of a screw adapted to move lengthwise, a nut running on said screw, a friction washer with which said nut can frictionally engage, a casing about the screw provided with a closed-end member in which the end of the screw reciprocates, a spongy material contained in the bottom of the said member and adapted to contain lubricant which is taken up by the screw by contact with the spongy material and a stutling box located at the opposite end of the casing and adapted to wipe the screw-threads as the screw reciprocate s" in and out of the casing, substantially as described.

In testimony whereof, I sign this specification in the presence of two witnesses.

' WILLIAM J. KING.

Witnesses:

N. V. 'BnLLEs, R. A. PARKER. 

